[1]盛振新,刘荣忠,郭 锐.水下连续爆炸声效应的实验研究[J].南京理工大学学报(自然科学版),2014,38(01):106-110.
 Sheng Zhenxin,Liu Rongzhong,Guo Rui.Experimental research of acoustic effect generated by sequential underwater explosions[J].Journal of Nanjing University of Science and Technology,2014,38(01):106-110.
点击复制

水下连续爆炸声效应的实验研究
分享到:

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
38卷
期数:
2014年01期
页码:
106-110
栏目:
出版日期:
2014-02-28

文章信息/Info

Title:
Experimental research of acoustic effect generated by sequential underwater explosions
作者:
盛振新刘荣忠郭 锐
南京理工大学 机械工程学院,江苏 南京 210094
Author(s):
Sheng ZhenxinLiu RongzhongGuo Rui
School of Mechanical Engineering,NUST,Nanjing 210094
关键词:
水下连续爆炸 时间间隔 小波变换 功率谱估计
Keywords:
sequential underwater explosions interval time wavelet transform power spectrum estimation
分类号:
TB561; TJ410.4
摘要:
为了研究水下连续爆炸声信号的特性,利用具有时间间隔的连续爆炸序列作为声源进行试验。将单个爆炸声信号进行滤波,分析2、5和10 kHz的混响信号,得出该水域的散射强度随频率的变化规律; 分析了时间间隔对水下连续爆炸声信号的影响,得出:(1)时间间隔越短,连续爆炸声源产生的冲击波峰值压力和冲击波强度越大。(2)在低频部分,不同时间间隔的连续爆炸声信号的强度相同,在高频部分,时间间隔越短,连续爆炸声信号的强度越高; 即低频信号衰减较慢,高频信号衰减较快。所得结论可为提高水下连续爆炸效应提供一定的理论基础。
Abstract:
Sequential underwater explosions with an interval time are used as an acoustic source to study the characters of signals generated by sequential underwater explosions.The signals generated by single explosion is filtered into 2 kHz,5 kHz and 10 kHz.The reverberation levels at different frequencies are analyzed to obtain the law of scattering strength to frequency.The signal generated by sequential underwater explosions are analyzed using wavelet transform combined with power spectrum estimation.Some conclusions are obtained:(1)the peak pressures of shock waves generated by sequential underwater explosions with shorter interval time is higher,so as the strength of shockwaves;(2)the strength of signals generated by sequential underwater explosions with different interval time spreads uniformly in low frequency range; in high frequency range,the strength of signals generated by sequential underwater explosions with shorter interval time is higher.

参考文献/References:

[1] Weston D E.Underwater explosions as acoustic sources[J].Proceeding of the Physical Society,1960,76(2):233-249.
[2]潘正伟,焦善武,顾晓辉.水下爆炸——高功率宽频带的水声干扰源[J].南京理工大学学报,1999,23(6):507-526.
Pan Zhengwei,Jiao Shanwu,Gu Xiaohui.Underwater explosion is an acoustic interference source with high power and wide band[J].Journal of Nanjing University of Science and Technology,1999,23(6):507-526.
[3]吴成,廖莎莎,李华新,等.基于Matlab方法水下爆炸声信号的特征提取及其分析[J].北京理工大学学报,2008,28(10):851-855.
Wu Cheng,Liao Shasha,Li Huaxin,et al.Extraction and analysis of the features of underwater explosion signal based on the Malab method[J].Transactions of Beijing Institute of Technology,2008,28(10):851-855.
[4]Guzhavina D V,Gulin E P.Experimental studies of low-frequency bistatic reverberation in a shallow water[J].Acoustical Physics,1999,45(6):663-669.
[5]Guzhavina D V,Gulin E P.Experimental studies of low-frequency reverberation on the continental slope in the northwestern pacific ocean[J].Acoustical Physics,2001,47(4):398-404.
[6]Vadov R A.Long-range sound propagation in the shallow-water part of the sea of okhotsk[J].Acoustical Physics,2002,48(2),142-146.
[7]Vadov R A.Long-range sound propagation in the northeastern atlantic[J].Acoustical Physics,2005,51(6):629-637.
[8]Vadov R A.Long-range sound propagation in the northwestern region of the pacific ocean[J].Acoustical Physics,2006,52(4):377-391.
[9]Vadov R A.Time structure of bistatic reverberation in the long-range propagation of explosion-generated signals[J].Acoustical Physics,2007,53(2),172-180.
[10]Sheng Zhenxin,Liu Rongzhong,Guo Rui.Reverberation generated by sequential underwater explosions[J].Acoustical Physics,2012,58(2):236-242.

相似文献/References:

[1]安保林,章启成,狄长安,等.模拟程控发射系统控制方法研究[J].南京理工大学学报(自然科学版),2009,(05):592.
 AN Bao-lin,ZHANG Qi-cheng,DI Chang-an,et al.Control Method of Simulated Programmable Emission System[J].Journal of Nanjing University of Science and Technology,2009,(01):592.
[2]裴善报,刘荣忠,郭 锐.水下连续爆炸声学特性分析[J].南京理工大学学报(自然科学版),2015,39(02):144.
 Pei Shanbao,Liu Rongzhong,Guo Rui.Analysis of acoustic characteristics of sequential underwater explosion[J].Journal of Nanjing University of Science and Technology,2015,39(01):144.

备注/Memo

备注/Memo:
收稿日期:2012-05-03 修回日期:2012-06-10
基金项目:江苏省普通高校研究生科研创新计划资助项目(CXZZ11_0270)
作者简介:盛振新(1986-),男,博士生,主要研究方向:新概念战斗部毁伤技术,E-mail:killer860710@163.com。
引文格式:盛振新,刘荣忠,郭锐.水下连续爆炸声效应的实验研究[J].南京理工大学学报,2014,38(1):106-110.
投稿网址:http://njlgdxxb.paperonce.org
更新日期/Last Update: 2014-02-28